Detroit has a long tradition of horror hosts but for whatever reason, The Ghoul rode the airwaves up from Toledo to outshine them all.
The other other Ghoulardi knock off apparently goes by Son of the Ghoul and has gotten in some legal trouble for it.
We did have a new horror host about 10 years back called Wolfman Mac who became infamous for getting sued over his act too. Apparently he stole it from some dude in Lansing. My friend worked for him for a couple episodes and it was a mess. They were depending on him to bring his own camera to shoot the whole thing on his first day. The best part of the show was that since he was buying up infomercial airtime for his show, he solicited sponsorships from local businesses to off set the cost. So every week this awful looking werewolf would show up on late night TV to swear a different pizzeria was the greatest ever.